Impelling mechanism for feeding and cutting



Dec. 12, 1933. H, MAYQH 1,938,920

IMPELLING MECHANISM FOR FEEDING AND CUTTING Filed April 12, 1932 2Sheets-Sheet 1 i a R En M a 4 &; Witnesses; fnvenZor;

Dec. 12, 1933- MAYOH 1,938,920

IMPELLING MECHANISM FOR FEEDING AND CUTTING Filed April 12, 1932 2Sheets-Sheet 2 Figs! Witnessea;

I 3M H.

Patented Dec. 12, 1933 UNITED STATES PATENT OFFICE 1,938,920 IIMPELIlING MECHANISM FOR FEEDING AND A I CUTTING 7 Frank H. Mayoh,Springfield, Mass.

Application April 12, 1932. Serial No. 604,754

16 Claims. (01. 164-56) This, invention relates to a mechanism forperforming feeding and cutting or like operations on paper, cloth, stripmetal or similar material, and has-for its object theproduction of newand r I improved type, wherein a new mechanical device, is operated by anew and novel impelling system. One object of the present invention isto operate feeding: rolls intermittently for variable periods to permitthe cutting off of sheets to predeterminedlengths. I

Another object is theprovision of a yieldable drive .to start thefeedmechanism smoothly and in likemanner the roll of material being operatedupon. y.

Another object is the provision of a clamp and cut-01f mechanism of a.type that will hold and sever a great variety of materials.

Another object is the provision of mechanism to convey the sheetscut-ofi away.

Another object is the provision of a system of impellation whereby thefunctions of various mechanisms are controlled by the displacement offluids in a hydraulic system.

"Still another object is the provision of a mechanism that can beoperated as an independent unit or that can be attached for the purposespecified to a variety of machines, such as folding machines, printingpresses, metal working machines or wrapping machines as examples ofdiverse use. i Other objects andadvantages will appear from thefollowing description of one embodiment of "the invention.

In the drawings, which are merely a preferred form of the invention.

Fig. '1 is a side elevation of the entire mechanism.

Fig. 2 is a front elevation of that portion of the entire mechanism tothe left of 15 on'line 2-2 of'Fig. 1. V v Fig. 3 is a plan sectionshowing that portion ;of the entire mechanism below line 3-3 of Fig. 2.

Fig. 4 is a section through the feed roll drive online 44 of Fig. 1 onan enlarged scale. Fig. 5 is, an 'end view of the mechanism shown inFig. 4 with the outer housing 43'removed. Fig. 6 is anend'view of theadjustable cam .shown in Fig. 2 in the direction 6-6; I

Fig. (is an end view'of a cam shown in Fig. 2 in the direction 'l-7. I

Fig. 8 is an end view of the drive sprocket unit in the direction 8-8 ofFig. 2. 9. 1s 2, section taken through line 9- 9,9 of Fig. 8. w

Like numbers designate like parts throughout the several views of thedrawings. The present embodiment of the invention comprises a feed roll1, that co-acts with a tension roll 2 to. feed strips of paper or othermaterial froma roll 3 this roll of material may be paper, cloth,imitation leather, cellophane, strip metal or similar material in kindand said material could be fed from a box or rack in stock lengths aswell as from'a roll. Tension roll 2 revolves on shaft 4, mounted in twolevers 5 that pivot on studs 6 in bosses on the frame of the device.

Roll 2 is in running contact with feed roll 1, and

as the material is fed between rolls 2 and 1 by 7 the, strip of material8 is fed through the rolls so that it will pass over three beltsindicated at 9.

A frame 10 comprising sides 11 and 12 with a cross section at 13 and 14provides the major structure in which this entire mechanism is mountedand at 15 is indicated a structure repre-, sentive of any type ofmachine to which this entire feeding and cutting unit may be attached bymeans of screws 16. The machine structure may be one of severaltypes'requiring a feeding mechanism such as are commonly used in paperconverting, cloth or metal working industries.

The material operated on is taken from roll 3,

it travels along line 17 over roll 1, and is delivered in cut sheets at8, roll 3 revolves in the direction ofarrow 20.

In contact with the roll of material is a pressureroll 18 that is freeto travel of its own weight along slots 19in the sides 11 and 120f frame10. This roll 18 keeps a constant pressure on the material therebyacting as a break and preventing the roll of material from unwindingexcept as the material is fed by therolls 1 & 2.

A main shaft 21 is drivenby means of a chain 22 and sprocket 23 (pinnedin place) from a drive shaft within the machine that this mechanismforms a part of or from a motor if the mechanism is used alone for thesimple purpose of feeding and cutting. .As shaft 21revolves'in thedirection of arrow 24 sprocket 25 is revolved and this drives chain 26.Sprocket 25 is preferably constructed as shown in Figs. 8 and 9 so thatit will yield ably take up the load of feeding as it is applied. 7

. otherwise free toirock on the sleeve within limits I as described inthe following paragraph. A flange 31 attached by screws 32 holds thesprocket springs in place while a collar 33 holds the entire unit on theend of the shaft.

As sprocket picks'up the load in starting the feeding, springs arecompressed against lugs 28 Fig. 8 and the recess due to the clockwiserevolving action of shaft 21 until the feeding of roll 1' commencesfollowing which the loadbecomes lighter and the springs expand to theirnear normal position ready for the initial shock of starting the nextcycle of feeding, which yielding action provides a smooth flexible pickup for the feeding of the material operated on and one that also allowsa gradual deceleration of the feeding roll as the feed mechanism isstopping and the load is removed. 7

As chain 26 is driven continuously by sprocket 25 it transmits movementcontinuously to another sprocket 34 mounted on the outer end of a shaft35 to which the feed roll .1 is attached. Shaft 35 revolves in twobearings that are made an in tegral part of frame 10 and this shaft'35revolves only when it is desired to feed roll 1 which is during avariableportion of each complete cycle of the entire mechanismcomprising the feeding and cutting or other sequence of operations. Toaccomplish this a'novel type of clutch is provided the operation ofwhich will .be best understood by referring to Figs. 4 and 5.

In sprocket 34 is mounted a split ring 36 having beveled surfaces 37 atthe split which contact with a bevel point on pin 38,-pin 38 also "has'a ,bevel at the opposite end that contacts with a is tempered so thatit springs inward and contracts in diameter, normally this causes pin 38to be pushed towards the centerof shaft 35, this also causes pin 39to'be forced to the left-as shown in Fig.4 although I have shown inaddition a spring 40 to assist in the movement of :pin 39.

Due to this inward contraction of split ring 36 sprocket 34 is free torevolve on a 'bushing' il pinned at 42 to shaft'35, therefore shaft 35is not revolved and in consequence there will be no revolving of thefeeding roll 1, except as provided for through the action of ahydraulically operated medium that pushes against the head of pin 39thereby causing the bevel surfaces to force-pin 38 outward radiallywhich expands ring 36 and causes "said ring to grip frictionallysprocket 34 within the-hole said ring is mounted in, there'- by causingshaft '35 to revolve and operate roll 1 to feed the paper or materialbeing operated on. Over the outer end of shaft 35 (Fig. 2) is a housing43 secured to frame 10 by two studs 44, attached to housing 43 is ahollow pipe 45, the other end. of this pipe (made continuous byinsorting a union and elbow) is attached to a boss 46 in the frame,inside of boss 46 is a plunger 4'7, this carries a roll 48 mounted on'apin 49. 7 Roll 48 is always in contact withjan adjustable cam made intwo sections 50 and 5.1, the function of this cam which is pinned toshaft 21 is to force plunger 4'7 up at the proper timein the operativecycle of the entire .mechanism, this in turn causes a fluid substance(preferably oil) that is retained in the upper chamber of boss 46 abovethe plunger 47 and in the pipe to press against pin 39 and therebycausing ring 36 to expand and cause sprocket 34 to revolve the feedingroll :as previously described.

When the cam allows plunger 47 to go down the fluid substance islikewise pushed down' by the expanding spring action of pin 39 whichdisengages the frictional contact of the split ring 36 and allows thefeed roll to stop. The construction of the fluid impelling cam will beevident by referring to Fig. 6 where that portion of it is pinned toshaft 21 the other portion. 51 is free to pivot about the shaft as acenter and is locked atvarious points by a lock screw 52, the object ofthis adjustment is to vary the length of the radius 53 as compared tothe radius 54 so that plunger 47 in Fig. 2 may be held up for a-greateror less length of operating time through less length of paper may be fedby the feed rolls past the cutting off knife (which is indicated as 55)during each operation of the knife which is caused .to cut the paperonce during each cycle of the machine.

Knife.55 is held by four screws 56 to a slide bar 57, this bar is freeto move up and down on two posts 58. In this bar are slidably mountedsix pins -59 the lower ends of which clamp the paper-as it is cut-offthere-being three pins-at the front of the knife and three at the rear.of the knife. screws 61 cause the pins to extend down below the cuttingedge :of the knife previous to the cutting operation and the first thingthat happens as slide bar 57 descends is for the clamp pins 59 to gripthe paper or material 'operatednn at the 995 front and rear of thecutting knife 55, the clamping action taking place :against ilongbars-62 and 63 at the front-and rearof thev knife respectivelyunderneath the paper except that at the "rear there is a long flatspring $64 the front end of 0 which is over the rear bar '63,consequently the rear end of the :materialcut oifis-clamped against thisspring 64 the reason for which will appear in the next paragraph. Twoscrews 65 hold' the long bars in place while the fiat spring is .held.135 to the frame structure by screws at 66, thebars are arranged sothere isa .slot between them for the knife to pass through.

Briefly -described what takes placein cutting off-is thatass'lide' barF51! descends, clamp pins 59 m grip the 'material and as slide barSFIgcontinues down knife 55 is forced through "the .material therebycutting it off, following this the clamp pins 59 are carried up by theslide bar :to :release the paper, at that time there is a slight upwardspr ing action "to :the flat spring '64 which insures-that the free endof :the material to :be fed will be slightly above bar 62 as it is:fediorward during the next cycle .of the .entire mechanism. The stripof paper cut off is :passed between a pair'of rolls I67 .and 63 theiowerrof which 67 is driven at a speed faster than that at which thepaper .is normally 'fed'by the feed rolls, through .the medium of thethree'belts Q-Whichare caused to travel by three pulleys 69 shown on thelower 1135 driveshaft 21. There are also threeouter pulleys .70 heldwithin a co-acting machine at any suit-- :able place where. it isdesired to carry the paper in, these being merely idle pulleys overwhich the conveying belts 9 travel. Roll 68 .is free to move up and.down in its supporting brackets 71 and of its own weight it acts as atension roll to assist in carrying the sheet cut-off .away. To causeslide bar 57 to move down hydraulical actuating mechanism is employedwhile two springs 72 force. the slide bar up at the 'completion of thecut.

In each of the two slide barguide posts 58 are drilled two holes, onehole lengthways -of the post the upper end of which is plugged 'by a 150Bent wire springs 60 held in :place by 300 v screw 73 and'theothercrossways of the post as indicated at-74 in both posts,there is also a.

chamber at 75 which is filled with oil or=0ther fluid substance, whichfluid also fills the post holes -and-in' addition pipe 76-'connectingboth poststogether with a co'-acting pipe 77,all' of said pipe beingjoined by elbows or other standard pipe fittings.

as cam forces plunger 78 up'as' shaft'21 revolves said cam thus forcesthe hydraulic fluid in the pipes 77 and 76 into the twochambers 75 andforces'slidebar 57 down, which in turn causes knife 55 to perform thefunction of cutting off and cam. Screws'at '73 and at are used to plugthefilling hole where the fluid is" putin place. t i

To review briefly the operation of this feeding and cutting mechanism itis obvious that. a roll of material 3 with a pressure roll 18 against itis fed through feed roll 1 and tension roll 2. Roll 1 is caused torevolve through the action of the adjustable cam pushing a fluidsubstance through pipe 45 and causing a clutch arrangement to drive saidroll 1, when the desired length of ma- "terial is fed out the clutcharrangement is released by removing the fluid pressure thereby Vstopping feed roll 1, after which another hydraulic fluid unit operatesknife slide bar 57 so that the material is clamped and cut off, afterthe knife 55 and clamp pins 59 go up the material is again fed out whilethrough the medium of speed belts 9 the sheet cut-01f is carried awayfrom this unit or into any suitable machine that this unit is a part of.

It will be understood that the specific form of the improvementdescribed and shown is illustrative of my invention, and that changesmay be made in the impelling medium or mechanism within the scope of theclaims as occasion demands without departing from the spirit; of theinvention.

I claim:

1. Mechanism for feeding and severing sheets from a continuous strip ofweb material comprising means for feeding the material strip endwise, acutting device, means for actuating said cutting device and means tocontrol said feeding mechanism intermittently embracing in combi nationfluid andv mechanical impelling contacts adapted to displace said fluidto perform the operating sequence.

2. Mechanism for feeding and severing sheets from a continuous materialstrip comprising means for feeding the material strip endwise, a

cutting device, means for actuating said cutting.

Pipe 77-leads to ,achamber'81 above plunger-78 in boss 79 of the frameand mechanical actuating mechanismto cause said 7 feed" roll to operate,a feeding drive unit embracing a fiexibledrive for said feed'rollcomprising in combinationa driven housing and a yieldable drive memberadapted to retard momentarily the feed action atthe start of eachfeeding cycle.

4.In a "continuous web material cutting de-. vice, a material feed roll,a retaining support to, hold a roll of material, a system of materialclamps, a cutting knife, means to operate said knife comprising ahydraulic actuating system and mechanical impelling contacts therefor,and a hydraulic system terminating in mechanical. act'uatingmechanismoperating said feed roll.

5. In a continuous web material cutting device, a material feed roll, aretaining support, to hold a roll of material, a cutting knife, means tooperate said knife comprising a hydraulic actuat-"- ing systemmechanically impelled and a hydraulic system" mechanically impelledterminating in mechanism operating said feed roll;

6. A machine unit of the character'describedin combination with, acontinuous web material feed device, means comprising in combinationahydraulic and mechanical impelling system actuating said feed device,anda cutting knife and material clamp jointly operableby meansincluding, hydraulic with mechanical impelling'mechanism as partthereof.

7. A machine unit of the character described in combination with, acontinuous web material feed device, means comprising a hydraulic systemmechanically impelled actuating said feed device, and a cutting knifeoperable by means including a combined mechanical and hydraulicimpelling mechanism as part thereof.

8. A machine for feeding and cutting off from a continuous strip of webmaterial having in combination a retaining support to hold a roll ofmaterial, a feeding roll, a friction drive for said feeding roll, ayielding drive sprocket adapted to retard-momentarily said feeding rollat the start of a feeding cycle, a cutting-off knife and recip-'rocating support therefor, operating means for erating mechanismtherefor, a feeding unit embracing a flexible drive for said feedingunit comprising in combination a driven housing and a yieldable drivemember adapted to retard momentarily the feeding action at the start ofeach feeding cycle.

10. Mechanism for severing sheets from a continuous strip of webmaterial comprising means for feeding the material strip endwise, acutting device having a movable element, a pressure fluid confined in achamber and means for actuating the cutting device embracing incombination a pumpless mechanical impelling contact adapted tointermittently displace at intervals said fluid associated with a pluralfunction coacting n mechanism operating the fluid impelling contact.

11. Mechanism for severing sheets from a continuous material stripcomprising means for feeding the material strip, a cutting device havinga movable element, a confined flexible concentrate constantly activeunder a non-reducible pressure and co-acting with means for actuatingsaid cutting device embracing in combination a pumpless mechanicalimpelling contact adapted to intermittently operate at synchronizedintervals in association with a plurality of automatic mechanismsadapted to intermittent propulsion.

l2. Amechanismfor cutting off having in combination, a cut-on knife andsupport therefor, an operating means for said knife embracing jointly anenclosed flexible impelling concentrate.

in combination with a pumpless mechanical impelling device havingintermittent propulsion means adapted to intermittently actuate. saidknife so that each action of the knife is responsive toeach action ofthe intermittent impelling device.

l3. Mechanism for feeding a continuous strip of web material comprisingmeans forfeeding the material, means for actuating the strip feedingmechanism periodically having a movable element and a constant pressurefluid confined constantly in a chamber and means associated therewithfor actuating said fluid periodically embracing a pumpless mechanicalimpelling contact as a motive force to cause the feeding mechanism tooperate. a r v a 14 Mechanism forfeeding a continuous strip comprisingmeans for feeding the material, means for actuating the strip feedingmechanism periodically having a movable element and a constantlyconfined flexible concentrate and means associated therewith foractuating intermittently the same said flexible concentrate embracing apumpless mechanical impelling contact as a motive force to cause thefeeding mechanism to operate.

15. A mechanism for driving between a source of power and an operativemechanism having in combination, a friction drive unit intermittentlyactionable, means for actuating the friction drive periodically having amovable element and any impelling concentrate confined constantly underconstant pressure and means associated therewith for actuatingperiodically said impelling concentrate embracing a pumpless mechanicalimpelling contact adapted to cause said friction to engage to impartmovement.

16. A mechanism forcontrolling action between a source of power and anoperative mechanismv

